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UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS
International General Certificate of Secondary Education
* 2 9 2 1 2 7 7 5 8 1 *
0625/52
PHYSICS
Paper 5 Practical Test
May/June 2013
1 hour 15 minutes
Candidates answer on the Question Paper.
Additional Materials:
As listed in the Confidential Instructions.
READ THESE INSTRUCTIONS FIRST
Write your Centre number, candidate number and name in the spaces at the top of the page.
Write in dark blue or black pen.
You may use a pencil for any diagrams, graphs or rough working.
Do not use staples, paper clips, highlighters, glue or correction fluid.
DO NOT WRITE IN ANY BARCODES.
Answer all questions.
Electronic calculators may be used.
You may lose marks if you do not show your working or if you do not use appropriate units.
At the end of the examination, fasten all your work securely together.
The number of marks is given in brackets [ ] at the end of each question or part question.
For Examiner’s Use
1
2
3
4
Total
This document consists of 11 printed pages and 1 blank page.
DC (NH/JG) 58684/5
© UCLES 2013
[Turn over
2
1
In this experiment, you will determine the mass of a metre rule using two methods.
For
Examiner’s
Use
Method 1.
Carry out the following instructions, referring to Fig. 1.1.
d
x
y
50.0 cm mark
metre rule
X
pivot
Fig. 1.1
You are provided with a 100 g mass, labelled X.
(a) (i)
Place the mass X on the rule so that its centre is at a distance d = 5.0 cm from the
zero end of the rule, as shown in Fig. 1.1. Record the value of d in Table 1.1.
(ii)
Adjust the position of the rule so that it is as near as possible to being balanced,
with the 50.0 cm mark to the right of the pivot.
(iii)
Measure, and record in the table, the distance x from the centre of the mass X to
the pivot.
(iv)
Measure, and record in the table, the distance y from the pivot to the 50.0 cm mark
on the rule.
(v)
Repeat the steps (i) – (iv) using d = 10.0 cm.
Table 1.1
d /cm
x /cm
y /cm
[3]
(b) (i)
Using the values of x and y in the first row of the table, calculate the mass M of the
rule using the equation
100x
M=
.
y
M = ........................................ [1]
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3
(ii)
Repeat step (b)(i) using the values of x and y in the second row of the table.
For
Examiner’s
Use
M = ........................................ [1]
(iii)
Calculate the average value of M.
average value of M = ........................................ [1]
Method 2.
(c) Measure the mass M of the rule using the balance provided.
M = ........................................ [1]
(d) A student carrying out this experiment expects that the values of the mass M obtained
by the two methods will be exactly the same.
Suggest two practical reasons why, in spite of following the instructions with care, the
values may differ. Assume that the balance used in Method 2 is accurate.
1. ......................................................................................................................................
..........................................................................................................................................
2. ......................................................................................................................................
..........................................................................................................................................
[2]
Question 1 continues on the next page.
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4
(e) Explain briefly how you judge the position of the centre of the mass X when it is on the
rule in (a)(iii). You may draw a diagram.
..........................................................................................................................................
..........................................................................................................................................
...................................................................................................................................... [1]
[Total: 10]
© UCLES 2013
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For
Examiner’s
Use
5
BLANK PAGE
© UCLES 2013
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6
2
In this experiment, you will investigate the cooling of water.
You are provided with a supply of hot water and a supply of cold water. Carry out the following
instructions, referring to Fig. 2.1.
thermometer
water
Fig. 2.1
(a) Measure and record the temperature θC of the cold water supplied.
θC = ........................................ [1]
(b) (i)
Pour approximately 200 cm3 of hot water into the beaker. Place the thermometer
in the beaker of water. When the thermometer reading stops rising, measure the
temperature θ of the water in the beaker and immediately start the stopclock. In
Table 2.1, record θ at time t = 0 s.
(ii)
In the table, record the temperature of the water at 30 s intervals until you have a
total of six values up to time t = 150 s.
Table 2.1
t /s
θ / °C
0
30
60
90
120
150
[2]
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For
Examiner’s
Use
7
(c) Empty the beaker. Pour approximately 200 cm3 of hot water into the beaker. Place
the thermometer in the beaker of water. When the thermometer reading stops rising,
measure the temperature θ H of the water in the beaker.
For
Examiner’s
Use
θ H = ........................................ [1]
(d) (i)
Pour 10 cm3 of the cold water into the beaker of hot water. Stir briefly. Measure and
record the temperature θ 1 of the water.
θ 1 = ........................................ [1]
(ii)
Pour another 10 cm3 of the cold water into the beaker of hot water. Stir briefly.
Measure and record the temperature θ 2 of the water.
θ 2 = ........................................ [1]
(e) Using the evidence that you have from the table and the readings in parts (c) and (d),
estimate the volume V of cold water that added to the hot water would give the same
temperature drop as allowing the hot water to cool for 150 s. Explain briefly how you
arrived at your answer.
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
..........................................................................................................................................
V = ........................................ [2]
(f)
This laboratory investigation could be used as a small-scale model for a process in a
factory. The laboratory investigation would be repeated many times.
Suggest two conditions that should be kept constant in order to provide reliable results.
1. ......................................................................................................................................
2. ......................................................................................................................................
[2]
[Total: 10]
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3
In this experiment, you will determine the focal length of a lens.
For
Examiner’s
Use
Carry out the following instructions, referring to Fig. 3.1.
illuminated
object
screen
u
lens
Fig. 3.1
(a) Place the lens a distance u = 25.0 cm from the illuminated object. Move the screen until
a sharply focused image of the object is seen on the screen.
(b) Measure, and record in Table 3.1, the height h of the image on the screen.
(c) Repeat the steps in (a) and (b) using u values of 30.0 cm, 35.0 cm, 40.0 cm and 45.0 cm.
(d) Calculate, and record in the table, the values of
1
.
h
Table 3.1
u / cm
h / cm
1 1
h cm
25.0
30.0
35.0
40.0
45.0
[2]
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9
1 1
(x-axis). You do not need to begin the axes
(e) Plot a graph of u / cm (y-axis) against
h cm
at the origin (0,0).
For
Examiner’s
Use
[4]
(f)
Determine the gradient G of the graph. Show clearly on the graph how you obtained the
necessary information.
G = ........................................ [2]
G
cm. Give your answer
(g) Calculate the focal length f of the lens, using the equation f =
1.5
to a suitable number of significant figures for this experiment.
f = ........................................ [2]
[Total: 10]
© UCLES 2013
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10
4
In this experiment, you will investigate lamps in series and parallel combinations.
Carry out the following instructions, referring to Fig. 4.1.
power
supply
A
P
lamp 1
lamp 2
lamp 3
Q
V
Fig. 4.1
(a) (i)
Switch on. Measure and record the potential difference V1 across lamp 1 and the
current I in the circuit. Switch off.
V1 = ............................................
I = ............................................
[2]
(ii)
Calculate the resistance R1 of lamp 1 using the equation R1 =
V1
.
I
R1 = ........................................ [1]
(iii)
Disconnect the voltmeter and reconnect it to measure the potential difference V2
across lamp 2.
V2 = ............................................
(iv)
Disconnect the voltmeter and reconnect it to measure the potential difference V3
across lamp 3.
V3 = ............................................
[1]
(v)
Calculate the total potential difference VT across the three lamps using the equation
VT = V1 + V2 + V3.
VT = ........................................ [1]
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For
Examiner’s
Use
11
(b) (i)
Complete the circuit diagram in Fig. 4.2 to show the three lamps in parallel with
each other between P and Q. Show the voltmeter connected to measure the
potential difference VP across the lamps. Use standard symbols.
For
Examiner’s
Use
power
supply
A
P
Q
Fig. 4.2
[2]
(ii)
Disconnect the lamps and the voltmeter. Rearrange them to make the circuit shown
in your circuit diagram.
(iii)
Switch on. Measure and record the potential difference VP across the lamps and
the total current IT . Switch off.
VP = ............................................
IT = ............................................
(iv)
Calculate the total resistance RP of the lamps arranged in parallel, using the
V
equation RP = P .
IT
RP = ............................................
[1]
Question 4 continues on the next page.
© UCLES 2013
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12
(c) A student suggests that RP should be equal to
R1
.
3
For
Examiner’s
Use
State whether your results support this suggestion and justify your answer by reference
to the results.
statement .........................................................................................................................
justification .......................................................................................................................
..........................................................................................................................................
[1]
R1
because the lamp filaments
3
are hotter when the lamps are connected in parallel than when the lamps are connected
in series.
(d) Another student suggests that RP may not be equal to
State one piece of evidence that shows that the lamp filaments are hotter in the parallel
circuit.
..........................................................................................................................................
...................................................................................................................................... [1]
[Total: 10]
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reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the
publisher will be pleased to make amends at the earliest possible opportunity.
University of Cambridge International Examinations is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of
Cambridge Local Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge.
© UCLES 2013
0625/52/M/J/13